Answer:
B
Step-by-step explanation:
2(x)+4=16
2(6)+4=16
12+4=16
Answer:
2.4 hours
Step-by-step explanation:
Let total work = X
Rate of work done = X ÷ time
Rate of A = X/4
Rate of B = X/6
If they work together, rate is the sum of their individual rates, i.e.
X/4 + X/6
= (3X + 2X)/12 (taking LCM)
=5X/12
Rate = X/time
5X/12 = X/time
time = X÷(5X/12)
time = X × 12/(5X)
time = 2.4 hours
Shortcut:
Product of individual times/sum of individual times
= (4×6)/(4+6)
=24/10
=2.4 hours
Answer:
Rs 2,or 2%profit
Step-by-step explanation:
the price he marked:

(20 percent more than cost price)
The discount he put: 15 percent

Rs102
102 is 2 more than 100
and is 2%profit.
Brainliest please